Search found 64 matches

by stan.distortion
Jun 26 2019 6:19pm
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 34639

Re: Aussie EV Autocross Special

Did you look into torque limiting/traction control? Makes the case for 4 independent motors and controllers, a leapfrog ahead of infernal combustion 4x4. The WRC cars are an example, the damn things can almost do ballet thanks to their traction control systems but they're limited to operating brakes...
by stan.distortion
Jun 26 2019 4:26am
Forum: Motor Technology
Topic: Power Spikes - Modifying Ninebot Controller
Replies: 9
Views: 636

Re: Power Spikes - Modifying Ninebot Controller

I'm no expert in circuit design but from what I gather ESCs blowing up under braking is a fairly common issue and as far as I can tell it's usually due to latch up, the gate voltages get high enough to turn themselves on. A "double pulse test" seems to be a good method of evaluating how well an ESC ...
by stan.distortion
Jun 25 2019 9:42am
Forum: E-Bike General Discussion
Topic: charging Li-On battery in winter - looking for heating element
Replies: 8
Views: 415

Re: charging Li-On battery in winter - looking for heating element

Beer warmer! Used for homebrew, usual very low wattage but maybe a little more pricey than other options as most home brewers use aquarium heaters instead. The more popular temperature controllers are well worth a look though, Inkbird ITC-308 is the model I'm using and very happy with them, plug in ...
by stan.distortion
Jun 24 2019 12:11pm
Forum: Alternative Energy
Topic: Liquid Fuels Made By Sunlight
Replies: 14
Views: 1677

Re: Liquid Fuels Made By Sunlight

.... Yep. The one big plus that ethanol has is that it works with a wide variety of plant material. But it's not very energy efficient. In energy terms it has a low EROEI. About the only time it makes sense is when it's used on plant matter or waste that would otherwise be discarded. For biofuel cr...
by stan.distortion
Jun 24 2019 11:35am
Forum: E-Vehicles General Discussion
Topic: Mercedes new ISG system, with 48V lithium battery
Replies: 7
Views: 729

Re: Mercedes new ISG system, with 48V lithium battery

The same thing was used very early on with hybrid designs, around 1910 to 1920 several used a generator/motor between engine and gearbox that also worked as a starter motor. The turbo spooling motor's interesting, was thinking of testing a motor driven turbo compressor section but it would need a hu...
by stan.distortion
Jun 24 2019 11:30am
Forum: Large EV General Discussion
Topic: Aussie EV Autocross Special
Replies: 333
Views: 34639

Re: Aussie EV Autocross Special

Great project and thread, subbed. Good luck with it, very interested in how it's working out in the hillclimbs.
by stan.distortion
Jun 24 2019 5:28am
Forum: Alternative Energy
Topic: Liquid Fuels Made By Sunlight
Replies: 14
Views: 1677

Re: Liquid Fuels Made By Sunlight

Just for reference, someone once worked this out for oil: https://www.eurekalert.org/pub_releases/2003-10/uou-bm9102603.php Sunlight to alcohol gives quite poor efficiency but works well with a very wide range of plant matter, lots of things that would only be considered waste otherwise. Ford did a ...
by stan.distortion
Jun 22 2019 6:14am
Forum: Large EV General Discussion
Topic: FIXED NOW --- bad torque steer on a gen 1 leaf local Nissan dont want to help
Replies: 15
Views: 823

Re: Help, bad torque steer on a gen 1 leaf local Nissan dont want to help

I'm struggling to think of how it could possibly be due to an electronic fault. My best guess would be: If there is play in the suspension that lets the afflicted wheel move backwards and forwards in the wheel arch then it will steer the car one way on throttle and the other way under braking due t...
by stan.distortion
Jun 21 2019 8:16am
Forum: Battery Technology
Topic: possible LTO super charger?
Replies: 26
Views: 953

Re: possible LTO super charger?

Ok, so the charging amps on these things are totally crazy, they'd need a BMS bigger than the ESC... hang on a mo, if pack voltages where close to 220v wouldn't that mean the ESC could be plugged directly into a 3 phase power line to charge them? Not planning on doing that btw! Just thinking out lou...
by stan.distortion
Jun 21 2019 2:47am
Forum: E-Bike Technical
Topic: Fabricating an axle for a Go SwissDrive Bikebus hub motor?
Replies: 3
Views: 201

Re: Fabricating an axle for a Go SwissDrive Bikebus hub motor?

I've gotten as far as unlacing the wheel. It looks like I'll need a gear puller to get the housings apart. Hopefully I won't need a hydraulic press to get at the axle itself. Read through a thread by someone striping a very similar looking motor recently and a puller was needed to get it apart safe...
by stan.distortion
Jun 21 2019 2:19am
Forum: Battery Technology
Topic: possible LTO super charger?
Replies: 26
Views: 953

Re: possible LTO super charger?

Hopefully LTO will start to phase out li-ion before too long, it really does sound like a big jump forward :)
by stan.distortion
Jun 21 2019 2:16am
Forum: General Discussion
Topic: 2 stroke gas/350w front hub full Regen project
Replies: 14
Views: 822

Re: 2 stroke gas/350w front hub full Regen project

How about also adding a sterling engine to turn the heat from the losses back into motive power? Joking :) Kinda viable though, a few high efficiency power stations use it but it's too bulky for mobile. Just a point on that starter motor, some old RD yamahas used the flywheel generator for starting,...
by stan.distortion
Jun 20 2019 1:56pm
Forum: General Discussion
Topic: MS Windows-7 screwed me, Linux/Ubuntu discussion
Replies: 71
Views: 4696

Re: MS Windows-7 screwed me, Linux/Ubuntu discussion

I'd used shotwell in the past and seem to remember getting on well with it too, iirc I came across gthumb while looking for it and unable to remember the name. That's the great thing with linux distros, usually dozens of apps that do the more or less same thing and really easy to install and find wh...
by stan.distortion
Jun 20 2019 11:53am
Forum: Large EV General Discussion
Topic: FIXED NOW --- bad torque steer on a gen 1 leaf local Nissan dont want to help
Replies: 15
Views: 823

Re: Help, bad torque steer on a gen 1 leaf local Nissan dont want to help

The local garage owner says he regrets not driving it before doing the replacement as he doesn't accept that his repair would have caused this issue. In that respect is it my word against his that it had no torque steer issue before I took it to them. Not sure how much good getting lawyer involved ...
by stan.distortion
Jun 20 2019 10:54am
Forum: Large EV General Discussion
Topic: FIXED NOW --- bad torque steer on a gen 1 leaf local Nissan dont want to help
Replies: 15
Views: 823

Re: Help, bad torque steer on a gen 1 leaf local Nissan dont want to help

Talk to a solicitor or inform the garage that's your next step if they don't fix their mistake and if it's not too late it could be worth asking for the parts that where removed/replaced as they may offer a clue to what's happening. They legally belong to you but the garage probably wont have kept t...
by stan.distortion
Jun 20 2019 2:24am
Forum: General Discussion
Topic: MS Windows-7 screwed me, Linux/Ubuntu discussion
Replies: 71
Views: 4696

Re: MS Windows-7 screwed me, Linux/Ubuntu/Mint discussion

My transition to Ubuntu is going well. Since "Paint" from MS is not already embedded, I am trying out "Gimp" to screencap pics, crop, and scale them to size. It s a free "photoshop basic" program, that is generic and open-source. Gimp can be a fairly steep learning curve, powerful but I could never...
by stan.distortion
Jun 19 2019 6:03pm
Forum: Battery Technology
Topic: possible LTO super charger?
Replies: 26
Views: 953

Re: possible LTO super charger?

How about doing it on vehicle, li-ion for capacity and li-po for burst power, kinda like warp capacitors :twisted: It looks like just linking the two sets of packs together via BMS should work.
by stan.distortion
Jun 19 2019 3:06pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Denzel 72v 4-spd Gearbox Build DB17
Replies: 56
Views: 4117

Re: Denzel 72v 4-spd Gearbox Build DB17

Just a thought on the gearchange, is the motor braking when the throttle is of or spinning freely?

EDIT: Nice unit too! :) Looks like it's based on a Honda 50 gearbox and those things did more for motoring than the model T (and maybe even the VW beetle).
by stan.distortion
Jun 18 2019 10:04am
Forum: General Discussion
Topic: Steampunk Voltmeter?
Replies: 14
Views: 968

Re: Steampunk Voltmeter?

Lol, it's quite possibly being put to the same use as it was originally intended for :mrgreen: In the early days of motoring EVs often outsold oil burning vehicles and that meters range will be pretty close to EVs of that time.
by stan.distortion
Jun 18 2019 9:48am
Forum: E-Bike Technical
Topic: DIY 0-5k throttle
Replies: 25
Views: 1224

Re: DIY 0-5k throttle

That would make sense, I'd stripped a couple recently and they where both hall and I'd assumed it was now the industry standard but I'm also having a sensor issue on an EFI system (megasquirt). Took ages to track down, no engine position signal while cranking, turns out the cause is noise from an al...
by stan.distortion
Jun 18 2019 8:36am
Forum: E-Bike Technical
Topic: DIY 0-5k throttle
Replies: 25
Views: 1224

Re: DIY 0-5k throttle

Imo you'd be better avoiding pots, they'll last for a while but at some point they'll inevitably ware out. Throttle position sensors used to be a nightmare on cars, always giving trouble when they where resistance based. These days they're almost always done with hall sensors. They're no more expens...
by stan.distortion
Jun 18 2019 8:18am
Forum: EV Business World
Topic: Affected by Tariffs?
Replies: 5
Views: 848

Re: Affected by Tariffs?

At the end f the day it's not going to make a whole lot of difference, the main reason China is able to totally eclipse the western world in manufacturing is they have less middle men wanting a cut. We create bureaucracy, red tape in the name of creating jobs but it's all friction in the works of in...
by stan.distortion
Jun 17 2019 5:44pm
Forum: Battery Technology
Topic: Automotive spot welder as battery welder?
Replies: 7
Views: 431

Re: Automotive spot welder as battery welder?

Yes, I have an industrial spot welder and it should be suitable, if a scooter starter relay can handle repeated doses of the amps needed then I'm guessing most welding transformers should be work ok :) A relay and timer on the mains input of a cheap stick plant could probably make a reliable low cos...
by stan.distortion
Jun 17 2019 9:20am
Forum: Battery Technology
Topic: Automotive spot welder as battery welder?
Replies: 7
Views: 431

Automotive spot welder as battery welder?

Anyone know it a variable output industrial/automotive spot welder is suitable for battery terminal welding? I've a decent quality unit here that works well on very thin steel sheet but can't find any info using this type of unit for battery terminal welding. I've plenty of dead cells to try it out ...